xref: /aosp_15_r20/external/llvm/test/Transforms/SimplifyCFG/2003-08-17-BranchFold.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; This test checks to make sure that 'br X, Dest, Dest' is folded into
2*9880d681SAndroid Build Coastguard Worker; 'br Dest'
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -simplifycfg -S | FileCheck %s
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Workerdeclare void @noop()
7*9880d681SAndroid Build Coastguard Worker
8*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: br i1 %c2
9*9880d681SAndroid Build Coastguard Workerdefine i32 @test(i1 %c1, i1 %c2) {
10*9880d681SAndroid Build Coastguard Worker	call void @noop( )
11*9880d681SAndroid Build Coastguard Worker	br i1 %c1, label %A, label %Y
12*9880d681SAndroid Build Coastguard WorkerA:		; preds = %0
13*9880d681SAndroid Build Coastguard Worker	call void @noop( )
14*9880d681SAndroid Build Coastguard Worker	br i1 %c2, label %X, label %X
15*9880d681SAndroid Build Coastguard WorkerX:		; preds = %Y, %A, %A
16*9880d681SAndroid Build Coastguard Worker	call void @noop( )
17*9880d681SAndroid Build Coastguard Worker	ret i32 0
18*9880d681SAndroid Build Coastguard WorkerY:		; preds = %0
19*9880d681SAndroid Build Coastguard Worker	call void @noop( )
20*9880d681SAndroid Build Coastguard Worker	br label %X
21*9880d681SAndroid Build Coastguard Worker}
22*9880d681SAndroid Build Coastguard Worker
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